Feeding means



Get. 13,1936. c ASH 2,057,286

FEEDING MEANS Filed May 15, 1955 INVENT OR CHARLES N. ASH

ATTO EYS Patented Oct. 13, I 1936 FEEDING MEANS Charles N. Ash, Chicago, Ill., assignor to Edward 0. Chandler, Cleveland, Ohio Application May 13, 1935, Serial No. 21,131

4 Claims.

This invention relates to means for feeding a solution of chemicals to a machine for washing dishes or thelike' andnsing washing and rinsing water from difierent' sources in, its operation.

The object of the invention is to provide means for automatically maintaining a given strength of washing solution by delivering detergent chemicals to the machine proportionally dependent upon delivery of water'to the machine from either source. 7 t

The exact nature of the invention together with further objects and advantagesthereof will be apparent from the following description talcen in connection with the accompanying drawing,

in which Fig. l is a conventionalized elevation partly in section, showing the essential parts of a typical washing machine with my invention ap-- plied thereto; Fig. 2 is an enlarged sectional,

detail of parts appearing in Fig. l.

With reference now to the drawing, I represents generally the housing 01 a dish-washing machine having an elevated open top container 2 for the washing solution, rack means 3 thereabove for supporting the dishes 4 to be washed, and screening 5 disposed between the dishes and the container to catch solids. removed from the dishes in the washing operation. A hot water supply line 6 is arranged for delivery of washing water to the container 2 subject to manipulation of the valve 1 by the operator. Anoverflow line 8 leads from the container to maintain a liquid level therein and provide removal. of floating particles, and a drain 9 is provided for the, container, by which heavier solids may be;removed.' The washing 0! the dishes is accomplished by jets from the nozzles or a spray device-i0,

directing upon the dishes} liiiu'idrcirculated from the container 2. Forthe purpose a pump ll driven by motor l2, receives liquid from the 0 container by way'-oi' the pipe l3 and delivers to theflspray device by way of a pipe H.

For rinsing of the dishes, a rinse spray device J5 suppliedby hotwater irom 'the line l6 subject to"valve ll, is arranged above the dishes to rain 45 rinse; water down thereupon this'water draining the rinse line It may deliver water of a higher through the pipe I; While the valve I is open,=

temperature than is necessary for the washing ing device are not material here, it being suffi- 1Q cient to state that the device receives water from its inlet 20, dissolves chemicals in this water during flow of the latter through the device, and

delivers the resultant solution of these chemicals through the pipe 2| in proportion to water 15 received at the inlet 20. This inlet includes a needle valve 20a and a sight glass 20?) by which the small amount of water receivable by the feeding device may be accurately and easily adjusted by the operator.

What has thus far been described is not new in the art, as will be appreciated by one familiar therewith.

According to this invention, a water supply connection for the feeding device is had from both the water inlet hnes G and IB- serving the washing machine. For this purpose a T fitting 22 is piped as indicated at 23 and 24 to receive water from the pipes l6 and 6, responsive to opening of their valves l1 and 1 respectively; that is, the connections 23 and 24 leading to the fitting 22 join the pipes l6 and 6 on the washing machine side of the valves l1 and I. A pipe 25 leads from the fitting 22 to the inlet 20 of the feeding device l8.

That the fitting 22 may act as a two-way valve,

to permit 'flow'into the line 25 fromeither of the lines 23, 24, but prevent flow between the lines 23 and 24; a ball 26 is arranged within the fitting to move between the ends of the pipes 23" v I and 24, and seat upon either to close its mouth. A

Although other valve means might be employed for the purpose, that here shown is simple,

inexpensive and otherwise satisfactory. Operation, will be as Iollows, assuming-suitable chemicals within the feeding device man a 1 lines 6 and I6 connected to sources of hot water supply. To start the machine it is first neces-' Sal?! that itS container tank I be fllledgwith water. This is accomplished by opening otfthe w valve 1 .until water commences to overflow the pipe 6 will be tilled withl'v'vater under pressure so thatthis-water will findits' way through the pipe 24 to the. fittingv 22. This will move the 5s" ball 26 from its full line position to its dotted line position, Fig. 2, so that flow into the pipe 23 is prevented, but takes place through the pipe 25 to the feeding device inlet 20. The valve of the inlet device permits a predetermined amount of such water toflow through the device, dissolving chemicals in its progress and thereafter entering the container 2 by way of the pipe 2i.

Thus as the container 2 receives water from the pipe 6, it also receives in definite proportion to this water, a solution of chemicals from the feeding device i8, and the machine is ready to wash.

The rack 3 containing articles to be washed, the motor I2 is started, actuating the pump ll, and throwing jets of the detergent-bearing washing water from the container 2 against the dishes, this water draining back into the container and being recirculated by the pump.

After completion of the washing part of the cycle, the pump is stopped or the washed articles otherwise removed from the effect of the washing jets. The valve i1 is thereupon opened, admitting rinse water through the pipe I and rinse nozzles l5. Thus the washed articles are rinsed, the rinse water ultimately falling into the container 2 and causing the latter to overflow through the pipe 8. Obviously the contents of the container are greatly diluted by this rinse water. However, according to this invention, when the valve I1 is opened, some of the rinse water finds itsway to the fitting 22 through the pipe 23, moving the valve 28 to its full line position, Fig. 2, and flowing through the pipe 25 to the inlet 20 of the feeding device, as

indicated by the arrows in Fig. 2. As water enters the feeding device, delivery of washing solution takes place as before, through the pipe 2| to the container 2, in amounts proportional to the amount of rinse water. Upon closing of the rinse valve l1, delivery of chemical solution terminates -coincidentally with delivery of rinse water.

Thus whatever amount of ater is delivered to the washing machine, whether it be washing water or rinse water, a proportional amount of chemical solution is simultaneously delivered to the container, so that the washing strength of the latter is maintained. This strength is determined by the setting of the inlet valve Ila of the chemical feeding device, and as already stated, is independent of the valves I and i1.

What I claim is:

1. In combination with a washing machine having washing and rinsing means and valved lines for separate supply of washing water and rinse water thereto, a chemical feeding device having a chemical container with a solvent water inlet thereto and an outlet connection for solvent solution leading therefrom to the washing means of said machine, means providing connections from both said water supply lines to said feeding device inlet for feeding of water to the latter and feeding'of solution from the feeding device to said washing means during feeding of water to said machine from either of said lines and including a single connection to said feeding device and means for preventing flow between said supply lines.

2. In combination with a washing machine having washing and rinsing means and valved lines for separate supply of washing water and rinse water, a chemical feeding device having a chemical container with a solvent water inlet thereto and an outlet connection for solution leading therefrom to the washing means of said machine, means providing connections from said water supply lines, on the washing machine side of their valves, to said feeding device inlet for feeding of water to the latter and feeding of solution from the feeding device to said washing means automatically proportional to feeding of water to said machine from either of said lines, said means including check valve means arranged to prevent flow to either supply line from the other.

3. In combination with a washing machine having washing and rinsing means and valved lines for separate supply of washing water and rinse water, a chemical feeding device having a chemical container with a solvent water inlet thereto and an outlet connection for solution leading therefrom to the washing means of said machine, means providing connections from said water supply lines, on the washing machine side of their valves, to said feeding device inlet for feeding of water to the latter and feeding of solution from the feeding device to said washing means automatically proportional to feeding of water to said machine from either of said lines, said means including a two-way check valve located in said connections to be effective to per- .mit flow from either water supply line to said feeding device but to prevent flow from either,

supply line to the other.

4. In combination with a washing machine having means for supporting the articles .to be washed and a container for washing solution arranged to receive drainage from said articles, means for circulating said solution over said articles, means for rinsing said articles, means providing for overflow from said container, said washing machine having valved lines for supply of washing water to said container and rinse water'to said rinse means, a'chemical feeding device having a chemical container with a solvent water inlet thereto and an outlet connection for solution leading therefrom to said container, and connections from said water supply lines, on the washing machine side of their valves, to said feeding device inlet for feeding of water to the latter and feeding of chemical solution from said feeding device. to said container automatically proportional to feeding of water to said machine from either of said lines, said connections including check valve means arranged to prevent flow from either water supply line to the other.

' CHARLES N. ASH. 

